Sorry Al. Yes, about a year ago there was a guy who came along with his own tablesaw alignment procedure. He claimed that this procedure enabled him to achieve repeatable 0.0001" accuracy on his tablesaw. No, that's not mistake, one ten-thousandth of an inch accuracy - IN WOOD! Of course, it took a monumental effort to get him to submit samples of such claimed accuracy. And, of course, his own samples (tested by an unbiased third party) proved him wrong. Turns out he was using a 0.001"/div indicator to "guestimate" 0.0001" accuracy. His "comparator stand" consisted of a China import dial indicator mounted to a China import magnetic base. His "surface plate" was a piece of 1/4" plywood on top of a contractor's style tablesaw. The whole thing was liberally sprinkled with sawdust. I can probably dig up the photo - send me email if you are interested.
One of the central themes in his alignment procedure was finding something he called the "null axis of the warp". Basically, he was convinced that blade warp was always bi-laterally symmetrical. In his case, he believed that a line could be drawn across the surface of any blade which was perfectly perpendicular to the arbor's axis of rotation. Finding this line (the "null axis of the warp") was the key to his (flawed) procedure.
Trust me Al, you're lucky you missed it. And, you wouldn't be in good company to hang on to such flawed reasoning.
Ed Bennett snipped-for-privacy@ts-aligner.com